Iwi extension stands for Call of Duty Game Skin file. You can open iwi files with Photoshop or iwi converter software.
These are the skin images that used with Call Of Duty game. The faces and the costumes of the characters are transferred by image file. Likewise, the other objects use skin file. You may change the appearance of the characters by changing iwi file.
You can convert the files which you created to iwi file by using Photoshop software.
What to use iwi
Photoshop, iwi converter
which page related to iwi file
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